TI-2024-16256 Aliases CVE-2024-24731 GHSA-f8fm-x537-w56p

Silicon Labs Gecko OS http_download Stack-based Buffer Overflow

MEDIUM 41CWE-120Published 2025-01-30 · Updated 2025-08-27

Key facts

Attack vector: Adjacent network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Silicon Labs Gecko OS. Authentication is not required to exploit this vulnerability. The specific flaw exists within the implementation of the http_download command. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the device.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00475 41st percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
silabs.com	Gecko OS	all versions	—	No fix listed	CNA

Gecko OS Vendorsilabs.com Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:silabs:gecko_os::::::::	all versions	Vulnerable	silabs.com

cpe:2.3:o:silabs:gecko_os:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·silabs.com

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2024-24731
2026-10-03 Alias added: GHSA-f8fm-x537-w56p

References

Advisory 1

https://www.zerodayinitiative.com/advisories/ZDI-24-870/

Other 1

https://community.silabs.com/a45Vm0000000Atp

TI-2024-15920 Stack-based buffer overflow in silabs.com Gecko OS CVSS 3.1HIGH 8.8
TI-2025-02477 Stack-based buffer overflow in silabs.com Gecko OS CVSS 3.0HIGH 8.8
TI-2024-15948 Silicon Labs Gecko OS HTTP GET Request Handling Stack-based Buffer Overflow CVSS 3.1HIGH 8.8
TI-2025-02478 Infinite loop in silabs.com Gecko OS CVSS 3.0MEDIUM 6.5
TI-2024-15919 Silicon Labs Gecko OS Debug Interface Format String CVSS 3.1MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences